Historical clue formulations

• "Hey, buddy!" — 2017-04-27
• Covert call — 2013-04-19
• "Hey you!" — 2011-09-16
• "Hey! … yeah, you!" — 2005-01-02
• "Your attention, please" — 2003-11-23
• "Hey, buddy!" — 2001-05-09
• "Hey there!" — 1995-11-17